HiFiMAN's HE400S are one of the world's most efficient planar headphones. The HE400S sound fantastic with almost any of your smartphones or portable music players. Designed to deliver superb HiFi sound, the HE400S has a comfortable and ergonomic design for long hours of listening.
The HE400S is a full-size, circumaural open-back headphone. Now sporting the new HiFiMAN headband and angled earpads that first appeared on the HE560 and HE400i, and the 2.5mm mini-jacks on the earcups that first appeared on their flagship HE1000, the HE400S a significant ergonomic improvement over the HE400.